Carriage for rounding-out machines for boot or shoe soles



(No Model.) 7

v A. 0. WINN. CARRIAGE FOR ROUNDING OUT MACHINES FOR BOOT 0R SHOESOLES.-

No. 555,718. Pa tented Mar. 3, 1896.

a D 'r' j H l I IHI I E UNITED STATES PATENT OFFICE.

ALBY C. )VINN, OF HAVERHILL, MASSACHUSETTS.

CARRIAGE FOR ROUNDING-OUT MACHINES FOR BOOT OR SHOE .SOLES.

SPECIFICATION forming part of Letters Patent No. 555,718, dated March 3,1896.

A lication fil d December 19, 1894. Serial No. 532,307. (No model.)

I To all whom it may concern.-

Be it known that I, ALBY O. WINN, a citizen of the United States,residing at Haverhill, in the county of Essex and State ofMassachusetts,have invented certain new and useful Improvements inCarriages for Round ing-Out Machines for Boot or Shoe Soles, of whichthe following, taken in connection with the accompanying drawings,is aspecification.

The object of my invention is to produce a carriage for rounding-outmachines whereby the sole of a boot or shoe can be cut with either asquare or round toe, and the invention is particularly adapted formachines in which the carriage is carried around the pattern by rollersworking in a slot in the table; and the invention consists in thepeculiar construction of the carriage and arrangement of the knife ashereinafter fully described and pointed out in the claims.

Referring to the accompanying drawings, Figure 1 represents a plan ortop view of a carriage for rounding-out machines embodying my invention.Fig. 2 is a front view of the same. Fig. 3 is aplan or top View of thebase-piece. Fig. 4 is a rear view of the knife.

A represents the base-piece, which at its front end is cut out and aplate A of circular form is inserted, to the under side of which aresecured frictionrollers B, that work in the slot in the table. Thisplate A can be adjusted and held in the required position, according tothe size of the sole and shape of the toe to be cut, by means of ascrew 1) that passes through the side of the base-piece A, its endentering a hole in the plate A. In the drawings I have shown two of saidholes in dotted lines, (see Fig. 3,) but any desired number may beemployed.

The sides of the base-piece A extend up, and near the top are formedwith a recess a, and upon the top of each side is secured a plate a,thus forming a groove in which a plate B slides. To the under side ofthe plate 13, at its rear end, is fulcrumed a bar D, (shown in dottedlines in Fig. 1,) and to the front end of the bar D is secured a rollercl.

E is a spiral spring, the outer end of which is in contact with saidroller cl, and its inner end is secured to the hub of a ratchet-wheel F,carried by an arm or side extension A of the base-piece A. The upper endof the hub of the ratchet-wheel F is provided with holes f, whereby thetension of the spring E can be adjusted to carry the plate B forward asrequired. The said ratchet-wheel is held in place by a pawl G, mountedupon the arm or extension A a spring 9 holding the pawl in contact withthe teeth of the ratchet-wheel F.

The spring E is inclosed between two plates H H to keep pieces ofleather or other articles from interfering with its action, one of saidplates, H, being secured to the arm A", and the other, H, to the hub ofthe ratchet-wheel F. The outer end of this spring passes through a slotin the side wall of the base-piece A.

In order to draw and hold the sliding plate B back whena sole has beencut or a fresh piece of leather is to be put in place, I employ ahand-lever I, fulcrumed at i to the plate 13, one end of which lever isin contact with a stud J on plate a, so that by drawing the outer end ofthe lever back it will carry the plate B with it, and when the lever haspassed over a cam-shaped stud j it is held fast. Upon the lever beingreleased a spring K, secured at one end to a stud 7c on the plate B andat its other end to the lever I, draws said lever back to its normalposition that is, in contact with a stud 7a which prevents its passingtoo far forward.

L is a small plate pivoted to the sliding plate B by a bolt Z. To thetop of this plate on one side is secured a guide-roller M, and on theother side is a small block N, which carries the knife P, that is of theform shown and is secured in place (but so as to be free to oscillate)by a bar Q passing through the block N, its end entering a notch 19, cutin the stem 1) of the knife. The bar Q is held in place by a fiat springB. To hold the knife in its normal position a small lever S is arrangedat the back of same, which is kept pressed forward by a spring T.

IVhen in operation the base-piece A is by any suitable means caused totravel on the table around the pattern and the sole to be cut, therollers B B working in a slot in said table, the rollers having firstbeen adjusted in position according to the size of the sole and shape oftoe required. The spring E, pressing the sliding plate B forward, causesthe roller M and the lower end of the knife P to come in contact withthe pattern, at the same time allowing them to advance or recedeaccording to the formation of the pattern. The knife P, being carried byits stem 1), is free to adjust itself to any angle, and as thecutting-edge of the knife is on a vertical line with the center of thestem it can turn at right angles, as would be required when cutting asquare toe, the pattern holding the base of the knife on a line with theside of the pattern until the corner is reached, when the center of thestem 1) and the cutting-edge of the knife would be in vertical alignmentwith said corner, and as the roller M would have turned the corner thebase of the knife is pressed out by the lever S and spring T and turnedsharply at right angles, the edge of the knife not having altered itsposition, but simply turned on its fulcrum. Thus a sharp corner is cut.

What I claim is 1. A carriage for rounding-out machines comprising inits construction a base-piece, a plate rotatively engaged therewith andcarryin g antifriction-rollers depending for e11- gagement with asuitable guide, means for locking the base-piece and plate together atdifferent positions of rotative adjustment, and self adjusting knifecarrying devices mounted on the base-piece.

2. In a carriage for rounding-out machines, a spring-pressed slide, ablock pivoted thereon and having bearing-pieces to work against thepattern, and a knife pivoted on said block and spring-pressed on oneside of its pivot substantially as and for the purpose described.

3. In a carriage for rounding-out machines a block pivoted to a slidingplate, a knife mounted upon said block the cutting-edge being on avertical line with the fulcrum upon which said knife turns and aguide-roller arranged on said block in advance of the knifesubstantially as set forth.

4. In a carriage for rounding-out machines, a slide yieldingly pressedforward, a block pivoted on said slide and carrying a roller to bearagainst the pattern, and a knife pivoted 011 the block beside the rollerand adapted to bear against the pattern, said knife being spring-pressed011 one side of its pivot substantially as and for the purposedescribed.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this 19th day of July, A. D.189-1.

ALBY (J. \VINN. \Vitnesses CHAS. STEERE, EDWIN PLAN'IA.

